Hi folks, I would like to share with you my project.It is an Arduino based alarm system which consists of 4x4 matrix keypad, 16x02 LCD screen connected to board using 2-wire schematic on 74LS164 and ATmega328p.

Could you please help me make it work on an normal parallel LCD shield that I usually initialize with LiquidCrystal lcd(8, 9, 4, 5, 6, 7); [ it is this model: http://www.dfrobot.com/index.php?route=product/product&product_id=51#.UvKJtbRqdpg ]

I have a 74hc595n chip, on the site off the picture (http://code.google.com/p/arduinoshiftreglcd/) I found a schematic for my chip, the circuit is great, but I think i have to modify the code to make it workI can get only random letters.if I use the solution from oby_one I get an error!

can you help me?Thanks

(I have a b50k potentiometer for the contrast (works great) , a 74hc595n chip.)